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City of OnkaparingaCommunity profile

O'Sullivan Beach - Lonsdale

Five year age groups

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In 2021, the largest age group in O'Sullivan Beach - Lonsdale was 70 to 74 year olds. The group that changed the most since 2016 was 65 to 69 year olds, decreasing by 58 people.

The Age Structure of O'Sullivan Beach - Lonsdale provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of O'Sullivan Beach - Lonsdale's residential role and function and how it is likely to change in the future.

Five year age groups present a classic age profile of the population. Each age group covers exactly five years, which enables direct comparison between each group.

To get a more complete picture O'Sullivan Beach - Lonsdale's Age Structure should be viewed in conjunction with Household Types and Dwelling Types.

Q:

Derived from the Census question:

'What is the person's date of birth or age?'

Age structure - Five year age groups
O'Sullivan Beach - Lonsdale - Total persons (Usual residence)20212016Change
Five year age groups (years)Number%City of Onkaparinga %Number%City of Onkaparinga %2016 to 2021
0 to 4814.45.4955.06.2-14
5 to 9935.06.21125.96.4-19
10 to 141035.56.2944.96.1+9
15 to 19894.85.81005.26.2-11
20 to 24824.45.61216.36.0-39
25 to 291317.16.01055.55.9+26
30 to 341256.76.31306.86.5-5
35 to 391307.06.71075.66.3+23
40 to 441126.06.11125.96.60
45 to 49995.36.41377.26.9-38
50 to 541377.46.61095.76.7+28
55 to 591015.46.51286.76.6-27
60 to 641246.76.31387.26.3-14
65 to 691176.35.91759.26.1-58
70 to 741518.15.71166.14.3+35
75 to 79945.13.8713.72.8+23
80 to 84563.02.3402.12.0+16
85 and over331.82.2201.02.1+13
Total population1,858100.0100.01,910100.0100.0-52
Source: Australian Bureau of Statistics, Census of Population and Housing 2016 and 2021. Compiled and presented by .id (informed decisions).
Please refer to specific data notes for more information

Dominant groups

Analysis of the five year age groups of O'Sullivan Beach - Lonsdale in 2021 compared to the City of Onkaparinga shows that there was a lower proportion of people in the younger age groups (under 15) and a higher proportion of people in the older age groups (65+).

Overall, 14.9% of the population was aged between 0 and 15, and 24.3% were aged 65 years and over, compared with 17.7% and 19.9% respectively for the City of Onkaparinga.

The major differences between the age structure of O'Sullivan Beach - Lonsdale and the City of Onkaparinga were:

  • A larger percentage of persons aged 70 to 74 (8.1% compared to 5.7%)
  • A larger percentage of persons aged 75 to 79 (5.1% compared to 3.8%)
  • A smaller percentage of persons aged 20 to 24 (4.4% compared to 5.6%)
  • A smaller percentage of persons aged 5 to 9 (5.0% compared to 6.2%)

Emerging groups

From 2016 to 2021, O'Sullivan Beach - Lonsdale's population decreased by 52 people (2.7%). This represents an average annual population change of -0.55% per year over the period.

The largest change in age structure in this area between 2016 and 2021 was in the age group:

  • 65 to 69 (-58 persons)

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